Having problems with steering column in my 2005 Range Rover HSE.

What is your question?

Purchased a rebuilt steering column and after being late 4 days i tested the new one and same problem. Put the key in and turns over and starts and will keep starting as long as key is in. Take the key out and re-insert the key and it doesnt turn at all. Locked up. The place where i purchased the rebuilt column from stated of course that it worked before we sent it and its probably something else triggering it like the ignition switch. Please any help would b gratefully appreciated. Is there a way to check the ignition to see if it faulty. Thank u anyone